F5 BIG-IQ vulnerabilities

CVE-2026-66842 High · 8.8 CWE-918 Sep 2, 2026

BIG-IP and BIG-IQ Configuration utility vulnerability

BIG-IP has a vulnerability where an authenticated user of any role may be able to create administrative user accounts through an undisclosed request to Traffic Management User Interface (TMUI). Impact: This vulnerability may allow an authenticated attacker with network access to the BIG-IP management interface to escalate privileges by creating administrative accounts on the BIG-IP system. There is no data plane exposure; this is a control plane issue only. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2026-42937 Medium · 6.5 CWE-732 May 13, 2026

iControl REST and tmsh vulnerability

Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) arp and ndp commands, and in BIG-IP iControl REST. These vulnerabilities may allow an authenticated attacker to view adjacent network information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2026-42406 High · 8.7 CWE-267 May 13, 2026

BIG-IP and BIG-IQ privilege escalation vulnerability

A vulnerability exists in BIG-IP and BIG-IQ systems where a highly privileged, authenticated attacker with at least the Certificate Manager role can modify configuration objects that allow running arbitrary commands. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2026-41959 Medium · 6.5 CWE-732 May 13, 2026

iControl and tmsh REST vulnerability

Incorrect permission assignment vulnerabilities exist in BIG-IP and BIG-IQ TMOS Shell (tmsh) network diagnostics commands and in BIG-IP iControl REST. These vulnerabilities may allow an authenticated attacker to view the network status of destination systems. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2026-41957 High · 8.8 CWE-502 May 13, 2026

BIG-IP and BIG-IQ Configuration utility vulnerability

An authenticated remote code execution vulnerability through undisclosed vectors exists in the BIG-IP and BIG-IQ Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2026-41954 Medium · 4.9 CWE-200 May 13, 2026

iControl REST and tmsh vulnerability

Sensitive information disclosure vulnerability exists in the undisclosed iControl REST endpoint and TMOS Shell (tmsh) command which may allow an authenticated attacker with resource administrator role privileges to view sensitive information. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2026-41219 Medium · 6.5 CWE-532 May 13, 2026

BIG-IP QKView vulnerability

An improper sanitization vulnerability exists in the BIG-IP QKView utility that allows a low-privileged attacker to read sensitive information from a QKView file. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated

CVE-2026-40698 High · 8.7 CWE-77 May 13, 2026

iControl REST and TMSH vulnerability

A vulnerability exists in BIG-IP and BIG-IQ systems where a highly privileged, authenticated attacker with at least the Resource Administrator role can create SNMP configuration objects through iControl REST or the TMOS shell (tmsh) resulting in privilege escalation. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2026-32643 High · 8.7 CWE-250 May 13, 2026

BIG-IP and BIG-IQ privilege escalation vulnerability

A vulnerability exists in BIG-IP and BIG-IQ systems where a highly privileged, authenticated attacker with at least the Certificate Manager role can modify configuration objects that allow running arbitrary commands. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CVE-2026-20916 High · 8.1 CWE-22 May 13, 2026

BIG-IQ iControl REST vulnerability

An authenticated iControl REST user with low privileges can create or modify arbitrary files through an undisclosed iControl REST endpoint on the BIG-IQ system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.